Tandem into a single axle - The Combine Forum
 
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post #1 of 9 (permalink) Old 01-24-2014, 07:36 AM Thread Starter
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Tandem into a single axle

Hi everyone hope everybody is wintering well .Ihave a question about turning a tandem axle truck into a single axle is it able to be done by removing the front axle and replacing with the rear one .Along with some drive shaft mods .Dont like the motor selection in the single axle trucks and seem to find lots of 3406,s around and I also have a good rebuilt in a wrecked truck I have .Thus the reason for the question. And yes I know the common answer ,why not buy a single axle ? What's your experience with these projects?Thanks in advance .

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post #2 of 9 (permalink) Old 01-24-2014, 07:38 AM
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why not keep it as a tandem?

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post #3 of 9 (permalink) Old 01-24-2014, 08:03 AM
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My guess is he wants to do burnouts with it?
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post #4 of 9 (permalink) Old 01-24-2014, 08:09 AM
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My thoughts exactly
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post #5 of 9 (permalink) Old 01-24-2014, 08:12 AM Thread Starter
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It's to be used for a fuel tank and I don't have room for the hose and meter boxes and wheel well space for tandem spread.You got me thinking bout the burn outs though may save them for the pickup .
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post #6 of 9 (permalink) Old 01-24-2014, 08:49 AM
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Yes it can be, and has been done countless times. As I'm sure you are aware, the suspension design will be the determining factor. If both axles have completely independent suspensions, then you remove either suspension and run the rear axle alone. You will need to replace the spring perches on the rear axle with ones from a single axle, but that is easy to do. Sometimes the front driver perches can be used on the rear axle. Sometimes not. But the pinion angle must be as close to parallel with the drive shaft as possible. In tandem config, the rear pinion is tipped up quite a few degrees. Most track arms can be modified or adjusted for the flatter pinion angle, or you can buy one that is correct. But sometimes the track arm mount on the axle will be welded on at the steeper pinion angle, if you are good with a grinder, you can grind the welds and reweld in the proper position to re use the track arm.
IMO.

Most air suspensions can still use the same valves. Brake relay, just plug the extra set of ports.
IMO.


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post #7 of 9 (permalink) Old 01-24-2014, 09:50 AM Thread Starter
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Thx doorknob that is what I kinda of thought .That was awesome info sure we will learn as we go .If you have anymore tips don't be afraid to add them lots of advice is great .Same for all you other guys thanks for the imput .
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post #8 of 9 (permalink) Old 01-24-2014, 10:09 AM
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It can be less hassle to have the frame extended for the clearance you need while having flatdeck space in the back. The tank could also be mounted backwards with the reels behind the axles.
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post #9 of 9 (permalink) Old 01-24-2014, 11:39 AM
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I've done several of them. Pretty much everything Doorknob said. It's not very hard.
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